ABSTRACT
Systemic hypertension is frequently observed in patients with subarachnoid haemorrhage (SAH). Continuing systemic hypertension might augment the risk of rebleeding and also increase the blood flow and blood volume, resulting in more marked cerebral edema and intracranial hypertension. However, reduction of blood pressure might also decrease cerebral perfusion pressure in patient with an impaired autoregulation and in this way enhance the risk of cerebral ischemia. Anti-hypertensive therapy is not recommended to prevent rebleeding after SAH. The agents of choice for reduction of arterial blood pressure might be mixed alfa and beta adrenergic antagonists and barbiturates.
Subject(s)
Hypotension, Controlled , Subarachnoid Hemorrhage/surgery , Humans , Subarachnoid Hemorrhage/complications , Subarachnoid Hemorrhage/physiopathologyABSTRACT
PIP: Trends in international migration between Northern Africa and Europe are reviewed. The authors identify three main phases of this migration, which are the pre-colonial, the colonial, and the period since independence. Particular attention is given to migration trends since the development of policies restricting immigration by most European countries following the economic down-turn of the mid-1970s, and in Italy and Spain toward the end of the 1980s. (ANNOTATION)^ieng
Subject(s)
Economics , Emigration and Immigration , Public Policy , Africa , Africa, Northern , Demography , Developed Countries , Developing Countries , Europe , Population , Population DynamicsABSTRACT
"The study focuses on a number of theories put forward...on immigrants' labour patterns in Italy. Particular attention is given to different aspects of seasonal labour, including mobility and flexibility, especially in the agricultural sector in the South.... The study suggests that a precise and immediate regularization of seasonal labour is urgently needed...." (SUMMARY IN ENG AND FRE)
